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OTREC: NCAR HCR radar moments data


HIAPER Cloud Radar (HCR) data collected aboard the NSF/NCAR GV HIAPER (Gulfstream-V High-performance Instrumented Airborne Platform for Environmental Research, HIAPER) (N677F) during OTREC (Organization of Tropical East Pacific Convection). The data were collected during 22 research flights which took place between August 7 and October 2, 2019, over the East Pacific and extreme SW Caribbean Ocean.

Data access

  • ORDER data for delivery by FTP

Additional information

Data Quality final
  • 0.1 (2019-11-07):

    Version 0.1 is the raw field data.

  • 1.0 (2020-01-03):

    Quality controlled final data set.

  • 2.0 (2020-02-24):

    Radar variables stayed the same. Model variables were upgraded to ERA5 (instead of ECMWF forecasts).

  • 2.1 (2020-08-10):

    Freezing level data field was added.

  • 2.2 (2021-04-20):

    Freezing level was replaced with melting layer field. Icing level was added.

  • 3.0 (2022-01-19):

    De-aliased velocity, convective/stratiform echo type, and particle identification were added.

  • 3.1 (2022-05-27):

    In the particle identification field (PID), liquid particles are no longer allowed at temperatures below -40 C.

  • 3.2 (2023-11-03):

    Improved echo type and melting layer fields.

(Only the current version of the data is available to order. If you have questions about a prior version, please email us.)
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Related projects
Frequency < 1 second
Language English
ISO Topic Categories
  • climatologyMeteorologyAtmosphere
GCMD Science Keywords Expand keywords
Related links

Temporal coverage

Begin datetime 2019-08-07 00:00:00
End datetime 2019-10-03 00:00:00

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 15.00, Minimum (South) Latitude: 2.00
Minimum (West) Longitude: -90.00, Maximum (East) Longitude: -73.00

Primary point of contact information

EOL Data Support <>

Additional contact information


NCAR/EOL HCR Team. 2023. OTREC: NCAR HCR radar moments data. Version 3.2. UCAR/NCAR - Earth Observing Laboratory. Accessed 21 Jun 2024.

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Ancillary information

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